22/25 Nina investigates how boats travel uphill and discovers the engineering secrets of canals. (R)
Andy travels back in time 152 million years, to the time of diplodocus. (R)
Peter and friends venture to Rocky Island to find the mysterious Old Rusty.
1/26 Raggles sees bright flashing lights one night and becomes convinced it is a spaceship. (R)
11/52 Wilson must remember where he is going to earn his Knowing Where You Are Going badge. (R)
17/25 Jack finds out all about digging for stone in the family's quarry. (R)
Tony Welch and his mum, Elaine, visit Topsy and Tim with Tony's new baby brother Jack.
17/21 Jack and Salty discover Angela the anglerfish's biggest secret. (R)
5/26 Abney and Teal go fishing and Abney catches a handbag. (R)
25/26 The animals challenge noisy Herbert the warthog to stay silent for a whole day. (R)